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Air Quality Monitoring

Daily Readings for March 21, 2025

Air Resource Management

Data on this page are updated hourly from 7:20 AM until 11:20 PM (Eastern time)

It is important to note that the ozone monitoring data less than three
months old viewed on this website have generally not been verified and
checked for quality assurance in accordance with federal requirements.

 
More Details about: St. Marks Wildlife Refuge
Ad Hoc Reporting

AQS # G129-0001

St. Marks Wildlife Refuge

Wakulla County

, FL 32355

Began Monitoring CO: 01/01/1984

Hourly CO Data For Friday, March 21, 2025

 
  CO data below are shown in Parts Per Billion (PPB)
Hour LST
1-Hr Avg.
Hour LST
1-Hr Avg.
1:00 AM 0.105 1:00 PM 0.117
2:00 AM 0.124 2:00 PM 0.164
3:00 AM 0.131 3:00 PM 0.173
4:00 AM 0.131 4:00 PM 0.179
5:00 AM 0.131 5:00 PM 0.181
6:00 AM 0.134 6:00 PM 0.149
7:00 AM 0.119 7:00 PM 0.126
8:00 AM 0.131 8:00 PM 0.128
9:00 AM 0.14 9:00 PM 0.126
10:00 AM 0.129 10:00 PM 0.122
11:00 AM 0.128 11:00 PM 0.13
12:00 PM 0.135 12:00 AM 0.136
Last Updated: Eastern
Data are time-stamped at the end of the hour.
* = Hourly Value Not Available
M = Missing Hourly Value
B = Bad Hourly Value
Federal Air Quality Standard

NO2 is not monitored at this site.

Began Monitoring Ozone: 01/01/1984

Hourly Ozone Data For Friday, March 21, 2025

 
  Ozone data below are shown in Parts Per Billion (PPB)
Hour LST
1-Hr Avg.
Hour LST
1-Hr Avg.
1:00 AM 30 1:00 PM 44
2:00 AM 33 2:00 PM 48
3:00 AM 33 3:00 PM 51
4:00 AM 33 4:00 PM 52
5:00 AM 31 5:00 PM 51
6:00 AM 29 6:00 PM 46
7:00 AM 27 7:00 PM 44
8:00 AM 26 8:00 PM 43
9:00 AM 31 9:00 PM 44
10:00 AM 37 10:00 PM 45
11:00 AM 38 11:00 PM 44
12:00 PM 41 12:00 AM 38
Last Updated: Eastern
Data are time-stamped at the end of the hour.
* = Hourly Value Not Available
M = Missing Hourly Value
B = Bad Hourly Value
Federal Air Quality Standard

Began Monitoring PM 2.5: 01/01/1984

PM 2.5 Data For Friday, March 21, 2025

 
PM 2.5 data below are shown in Micrograms Per Cubic Meter (mg/m3)
Hour LST
Reading
Hour LST
Reading
1:00 AM 7.3 1:00 PM 4.7
2:00 AM 12.4 2:00 PM 7.6
3:00 AM 6.4 3:00 PM 11.7
4:00 AM 5.2 4:00 PM 14.9
5:00 AM 5.6 5:00 PM 11.4
6:00 AM 5 6:00 PM 6.1
7:00 AM 7.3 7:00 PM 3.4
8:00 AM 6.4 8:00 PM 4.8
9:00 AM 5.7 9:00 PM 5.1
10:00 AM 5.4 10:00 PM 5.1
11:00 AM 5.2 11:00 PM 2.8
12:00 PM 10.6 12:00 AM 5.5
* = Hourly Value Not Available
M = Missing Hourly Value
B = Bad Hourly Value
Last Updated: Eastern Federal Air Quality Standard
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PM 10 is not monitored at this site.

Began Monitoring SO2: 06/18/2014

Hourly SO2 Data For Friday, March 21, 2025

 
  SO2 data below are shown in Parts Per Billion (PPB)
Hour LST
1-Hr Avg.
Hour LST
1-Hr Avg.
1:00 AM 0.072 1:00 PM 0.206
2:00 AM 0.074 2:00 PM 0.26
3:00 AM 0.073 3:00 PM 0.274
4:00 AM 0.083 4:00 PM 0.292
5:00 AM 0.082 5:00 PM 0.373
6:00 AM 0.094 6:00 PM 0.225
7:00 AM 0.095 7:00 PM 0.219
8:00 AM 0.106 8:00 PM 0.142
9:00 AM 0.163 9:00 PM 0.163
10:00 AM 0.189 10:00 PM 0.169
11:00 AM 0.197 11:00 PM 0.165
12:00 PM 0.218 12:00 AM 0.13
Last Updated: Eastern
Data are time-stamped at the end of the hour.
* = Hourly Value Not Available
M = Missing Hourly Value
B = Bad Hourly Value
Federal Air Quality Standard

Last updated: July 27, 2012